Qtopia (former Qt Palmtop Environment) is a platform for linux-based PDAs, Webpads and mobile-phones developed by Trolltech. License As most Trolltech products Qtopia is dual licensed under the free License:GPL or closed-source which requires a licensing fee then.

Dates is a small, lightweight calendar that shares data with GNOME Evolution. Dates features an innovative, unified, zooming view and is designed for use on hand-held devices, such as the Nokia 770 or the Sharp Zaurus series of PDAs.

Contacts is a small, lightweight addressbook that uses libebook. This is the same library that GNOME Evolution uses, so all contact data that exists in your Evolution database is accessible via Contacts. Contacts features advanced vCard field type handling and is designed for use on hand-held devices, such as the Nokia 770 or the Sharp Zaurus series of PDAs.